/Engine/Source/Runtime/Core/Public/Math/UnrealMathUtility.h
: 'Azimuth' (.X) sign is changed to represent left/right and not front/behind. front/behind is the funtion's return value.
true if 'Direction' is facing AxisX (Direction dot AxisX >= 0.f)
static bool GetDotDistance ( FVector2D & OutDotDist, const FVector & Direction, const FVector & AxisX, const FVector & AxisY, const FVector & AxisZ )